Net Multicast RPC functions do not fire other session members properly

Networking - Sep 5, 2018

Using a multicast function does not call the function on both client and server. The functionality in this reproduction project can be found in the BP_MyPC blueprint. Regression?: No This occurs in ...

Find Session times out when run while in a Steam Session

Networking - Aug 30, 2018

A user has reported an issue where Find Session times out when attempting to run it while hosting a Steam session or while being the client of one. The user mentions that this is caused by RequestLo ...

Crash serializing LAN query response in OnlineSessionInterfaceSteam

Networking - Aug 28, 2018

Server will crash in FOnlineSessionSteam::AppendSessionToPacket due to the OwningUserId being null. ...

Keep World option for Attach / Detach to / from Component does not replicate properly to clients

Networking - Aug 23, 2018

Using Attach To Component and Detach From Component with the Keep World option for the Location/Rotation/Scale rules does not replicate properly to clients. This does work when using AttachToActor a ...

Cannot pass a Dictionary through a Replicated Function

Networking - Aug 23, 2018

When passing dictionary (map) variables through replicated (to server) functions, the value will not print out on the client. In 4.19.2 (CL-4033788) this caused a crash but in 4.20.2 (CL-4302132) an ...

Toggling visibility of Sublevels on a server can cause a disconnect if Dynamic Actors exist in the sublevels.

Networking - Aug 17, 2018

The PackageMap / NetGuidCache appear to get into a bad state on Clients if the Server toggles level visibility of a sublevel. This can affect currently connected clients, as well as clients that jo ...

Find Session and Join Session to join a session over LAN on iOS is inconsistent and requires being run multiple times to work

Networking - Aug 8, 2018

Attempting to use Find Session / Join Session to join a LAN session on iOS results in inconsistent results, requiring the client to press the join button multiple times to join properly. Currently ...

Crash upon attempting to load into session via Join Session in Blueprints on iOS

Networking - Aug 8, 2018

Joining a session on iOS using the Join Session node in Blueprints causes a crash on iOS. This is similar to UE-62319 but was requested to be entered separately. This has not been reproduced in Mai ...

Child Actors do not replicate to clients when running project with "-game" command

Networking - Aug 7, 2018

Child Actors do not replicated properly to clients when running a project using the "-game" commandline argument. This does functionality does work properly in PIE and in a cooked build however. Re ...

Actor Component Replication Not Working on Dynamically Spawned Components in Blueprint

Networking - Aug 7, 2018

Actor components that are spawned dynamically through Blueprint are not being properly replicated to the client.  Found in 4.20 CL# 4233996 and reproduced in 4.21 Main CL# 4258917 Unable to test i ...